36 citations · 37 across the 6 of their papers we have counts for
4 papers · 1 filter
North or South? Diagnosing LLMs' Understanding of North Korean Language, Society, and Knowledge
Kiwoong Park, Seyoung Song, Donghyun Woo +1
Large Language Models (LLMs) have made substantial progress in multilingual question answering, yet their ability to understand low-resource sociolinguistic contexts remains under-…
The Surrogate Is Not the Reward: Post-Surrogate Primary-Outcome Acquisition in Contextual Bandits
Kyungbok Lee, Michael R. Kosorok
We study contextual bandits in which a surrogate is observed after the action but before the learner decides whether to acquire the primary outcome that defines action value and re…
The Fidelity and Feedback Traps: The Case for Health Digital Twins as Modular Evolving Causal Systems
Nikki L. B. Freeman, Yating Zou, Kyungbok Lee +3
Digital twins for health may be used to compare treatments, project patient trajectories, and support clinical decisions. While related to mechanical digital twins, those initially…
Provable Offline Reinforcement Learning for Structured Cyclic MDPs
Kyungbok Lee, Angelica Cristello Sarteau, Michael R. Kosorok
We introduce a novel cyclic Markov decision process (MDP) framework for multi-step decision problems with heterogeneous stage-specific dynamics, transitions, and discount factors a…